You can lift or
drop a ball without penalty if an immovable obstruction hinders play (tee sign,
fence, cart, etc.)

If a ball is
deemed out of bounds or unplayable, it can be dropped in play with a one stroke
penalty, but no more than one metre closer to the hole. Alternatively it can be
replayed from the previous shot.

When another
player is to play, do not stand directly behind them or in line with the hole
as this may cause a distraction.